【发布时间】：2013-01-07 19:10:02
【问题描述】：
请看下面的代码
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class TestForm extends JFrame
{
private JLabel heightLabel, weightLabel, waistLabel, neckLabel, hipsLabel,bfPercentageLabel;
private JTextField heightTxt, weightTxt, waistTxt, neckTxt, hipsTxt;
private JPanel centerPanel;
private JPanel southPanel;
private JLabel endTargetWeightLabel;
private JLabel endTargetWeightResultLabel;
private JLabel fatMustLoseLabel;
private JLabel fatMustLoseResultLabel;
public TestForm()
{
//Declaring instance variables
heightLabel = new JLabel("Height: ");
weightLabel = new JLabel("Weight: ");
waistLabel = new JLabel("Waist: ");
neckLabel = new JLabel("Neck: ");
hipsLabel = new JLabel("Hips: ");
bfPercentageLabel = new JLabel("The Orginal Test Score Is: ");
heightTxt = new JTextField(7);
weightTxt = new JTextField(7);
waistTxt = new JTextField(7);
neckTxt = new JTextField(7);
hipsTxt = new JTextField(7);
endTargetWeightLabel = new JLabel("Your End Target Performance is: ");
fatMustLoseLabel = new JLabel("Sammple Performance You Must Lose: ");
endTargetWeightResultLabel = new JLabel("d");
fatMustLoseResultLabel = new JLabel("e");
this.add(createNorthPanel(),"North");
this.add(createCenterPanel(),"Center");
this.add(createSouthPanel(),"South");
this.add(new JPanel(),"West");
this.add(new JPanel(),"East");
this.setTitle("The Test Form");
this.pack();
this.setLocationRelativeTo(null);
this.setVisible(true);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
private JPanel createNorthPanel()
{
JPanel northPanel = new JPanel();
northPanel = new JPanel();
northPanel.setLayout(new FlowLayout());
JLabel logoLabel = new JLabel();
logoLabel.setIcon(new ImageIcon(getClass().getResource("/images/TESTING-LOGO.gif")));
northPanel.add(logoLabel);
return northPanel;
}
private JPanel createCenterPanel()
{
centerPanel = new JPanel();
GridBagLayout gbl = new GridBagLayout();
GridBagConstraints gbc = new GridBagConstraints();
centerPanel.setLayout(gbl);
gbc.gridx = 1;
gbc.gridy = 1;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,0,0,0);
centerPanel.add(heightLabel,gbc);
gbc.gridx = 2;
gbc.gridy = 1;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,0,0,0);
centerPanel.add(heightTxt,gbc);
gbc.gridx = 3;
gbc.gridy = 1;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,10,0,0);
centerPanel.add(weightLabel,gbc);
gbc.gridx = 4;
gbc.gridy = 1;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,-10,0,0);
centerPanel.add(weightTxt,gbc);
gbc.gridx = 1;
gbc.gridy = 2;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,0,0,0);
centerPanel.add(waistLabel,gbc);
gbc.gridx = 2;
gbc.gridy = 2;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,0,0,0);
centerPanel.add(waistTxt,gbc);
gbc.gridx = 3;
gbc.gridy = 2;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,10,0,0);
centerPanel.add(neckLabel,gbc);
gbc.gridx = 4;
gbc.gridy = 2;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,-10,0,0);
centerPanel.add(neckTxt,gbc);
gbc.gridx = 5;
gbc.gridy = 2;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,7,0,0);
centerPanel.add(hipsLabel,gbc);
gbc.gridx = 6;
gbc.gridy = 2;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,5,0,0);
centerPanel.add(hipsTxt,gbc);
gbc.gridx = 1;
gbc.gridy = 5;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(50,0,0,0);
gbc.gridwidth = 6;
centerPanel.add(bfPercentageLabel,gbc);
centerPanel.setBorder(BorderFactory.createTitledBorder("The Testing Form"));
centerPanel.setPreferredSize(centerPanel.getPreferredSize());
centerPanel.validate();
return centerPanel;
}
private JPanel createSouthPanel()
{
southPanel = new JPanel();
GridBagLayout gbl = new GridBagLayout();
GridBagConstraints gbc = new GridBagConstraints();
southPanel.setLayout(gbl);
gbc.gridx = 1;
gbc.gridy = 1;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(10,0,0,0);
southPanel.add(endTargetWeightLabel,gbc);
gbc.gridx = 2;
gbc.gridy = 1;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(10,5,0,0);
southPanel.add(endTargetWeightResultLabel,gbc);
gbc.gridx = 1;
gbc.gridy = 2;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(10,0,0,0);
southPanel.add(fatMustLoseLabel,gbc);
gbc.gridx = 2;
gbc.gridy = 2;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(10,5,0,0);
southPanel.add(fatMustLoseResultLabel,gbc);
southPanel.setPreferredSize(new Dimension(centerPanel.getWidth(),100));
southPanel.setBorder(BorderFactory.createTitledBorder("See Your End Target Weight"));
return southPanel;
}
public static void main(String[]args)
{
try
{
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
new TestForm();
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
以上是可能的最大缩短代码。删除更多元素不会显示原始错误。
好的。现在的问题是关于对齐。运行代码后，您将看到以下内容。
正如您在那里看到的，southPanel 中的元素与centerPanel 没有很好地对齐。这意味着，我希望 southPanel JLabels 进入 centerPanel JLabels 开始的同一行。但它最终以这种方式结束。我希望 southPanel 中的 JLabels 出现在 centerPanel 的 JLabels 开始的同一行中。我所说的清楚地显示在下图中。我该怎么做？请帮忙！
PS：我也附上了“测试图像”，因此您可以根据需要进行测试。
【问题讨论】：
-
您是否使用任何 IDE，例如
eclipseORNetbeans。在那里，您可以打开表单视图并通过拖放来安排对齐方式。 -
@smit：不。Java 社区不接受 Java 中的拖放操作。而且，表单视图只有在您在可用的项目中编码时才可用
-
drag and drop只是表达我的意思是如果你用 Windowbuilder Editor 打开你的文件，你可以安排你的字段 -
@smit：我知道。你说我可以拖放按钮、文本字段等。这是一种非常糟糕的做法。在 .NET 中，它被接受是因为它们似乎默认遵循 MVC。但在 Java 中，情况并非如此。我从包括国际 AI 研究人员（我的讲师）和关键系统开发人员（另一位讲师）以及我个人认识的在 Oracle 论坛担任职位的人那里接受了有关拖放的 cmet。据他们说，拖放文化正在浪费整个 Java。我同意，因为我已经看到人们用拖放操作做了什么
-
我认为你没有明白我在说什么。我说过一旦你创建了你的表单，你可以在 Windowbuilder 中看到它的样子，在那里你可以改变你的对齐方式。我不是在谈论通过拖放创建表单。您可以通过任何方式向我展示您正在谈论的讲座的链接。
标签： java swing jpanel jlabel gridbaglayout